All Bosses Challenge is a custom survival, where the goal is to reach the last boss and emerge victorious. Every rounds are getting harder, bosses use powerful abilities, and even items!The gamemode is currently updated every day, to fix bugs, unbalanced abilities or items, and of course for new content like new heroes, new bosses.. You will meet a Phoenix every 5 rounds, getting stronger, he'll reborn from his ashes and fight till the end!